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Why is the oven temperature incorrect?
To avoid personal injury or death, disconnect your appliance from its power source before you start any troubleshooting or repair work. Use caution when working inside any appliance.
The oven temperature control is usually controlled by a thermostat that uses a capillary and liquid filled bulb. When the bulbsТ liquid gets heated up, it expands and puts pressure on a diaphragm which opens and closes a switch that allows power to the heating element. Just set the dial to what you need the temperature to be. Over time, it is possible for your thermostat to lose its calibration.
Digital display models use a sensor to control temperature. If this is faulty, replace it. Other ovens use a mechanical system to control the temperature.
On many models, you can adjust your oven thermostat using a small screwdriver. The adjusting screw is located on the thermostat valve stem. Remove the oven thermostat knob and youТll see the screw underneath it. You want to turn the oven on and run it through at least two cycles while watching a calibrating thermometer in the oven for high and low temperatures. Adjust the screw as necessary to fine tune the temperature.
Some models donТt have an adjustable thermostat, and you will have to replace the thermostat if you want to resolve the problem.